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authorJim Meyering <jim@meyering.net>1998-08-02 16:20:39 +0000
committerJim Meyering <jim@meyering.net>1998-08-02 16:20:39 +0000
commit419b2d26fe77a1ce8a5060f2f2f50daf4007cea2 (patch)
treec6f7ce6a4e8c84a744cd381d0fa0bed3c89f18a8 /m4
parent4ed33b3073380bbd9a8491fec5d4a5d97f3363f1 (diff)
downloadcoreutils-419b2d26fe77a1ce8a5060f2f2f50daf4007cea2.tar.xz
Use hack to avoid having to put #undef HAVE_ST_MTIM in acconfig.h manually.
Diffstat (limited to 'm4')
-rw-r--r--m4/st_mtim.m423
1 files changed, 19 insertions, 4 deletions
diff --git a/m4/st_mtim.m4 b/m4/st_mtim.m4
index 2de9649cc..6a4c5b4b4 100644
--- a/m4/st_mtim.m4
+++ b/m4/st_mtim.m4
@@ -1,4 +1,4 @@
-#serial 1
+#serial 2
dnl From Paul Eggert.
@@ -8,7 +8,22 @@ AC_DEFUN(AC_STRUCT_ST_MTIM,
[AC_CACHE_CHECK([for st_mtim in struct stat], ac_cv_struct_st_mtim,
[AC_TRY_COMPILE([#include <sys/types.h>
#include <sys/stat.h>], [struct stat s; s.st_mtim;],
- ac_cv_struct_st_mtim=yes, ac_cv_struct_st_mtim=no)])
+ ac_cv_struct_st_mtim=yes,
+ ac_cv_struct_st_mtim=no)])
+
if test $ac_cv_struct_st_mtim = yes; then
- AC_DEFINE(HAVE_ST_MTIM)
- fi])
+ if test x = y; then
+ # This code is deliberately never run via ./configure.
+ # FIXME: this is a hack to make autoheader put the corresponding
+ # HAVE_* undef for this symbol in config.h.in. This saves me the
+ # trouble of having to add the #undef in acconfig.h manually.
+ AC_CHECK_FUNCS(ST_MTIM)
+ fi
+ # Defining it this way (rather than via AC_DEFINE) short-circuits the
+ # autoheader check -- autoheader doesn't know it's already been taken
+ # care of by the hack above.
+ ac_kludge=HAVE_ST_MTIM
+ AC_DEFINE_UNQUOTED($ac_kludge)
+ fi
+ ]
+)